Topic:
Visible calibration update for month of July 2008
Date/Time(UTC) Message Issued:
7 July 2008, 1930 UTC
Satellite(s) Involved:
NOAA-16, 17, 18, & MetOp-2/A
Instrument(s) Involved:
AVHRR
Product(s) Involved/Affected:
All Products from channels 1, 2, and 3a.
Date/Time(UTC) of Initial Implementation:
8 July 2008, Time TBD UTC
Details/Specifics of Change:
The following update of the calibration coefficients are recommended for MetOp-2/A, NOAA-18, 17, and 16 on July 8. These coefficients are intended to be optimal on July 26, in the middle of the two scheduled updates.
Metop-A/2
Ch_1_lo = 0.05289*count - 2.138, count<501.00
Ch_1_hi = 0.1563*count - 53.94, count>501.00
Ch_2_lo = 0.06266*count - 2.491, count<500.00
Ch_2_hi = 0.1861*count - 64.26, count>500.00
Ch_3_lo = 0.03153*count - 1.296, count<502.00
Ch_3_hi = 0.2190*count - 95.40, count>502.00
************************************************
NOAA-18 AVHRR
Ch_1_lo = 0.05331*count - 2.102, count<501.00
Ch_1_hi = 0.1589*count - 54.66, count>501.00
Ch_2_lo = 0.06096*count - 2.402, count<500.00
Ch_2_hi = 0.1829*count - 63.73, count>500.00
*********************************************
NOAA-17 AVHRR
Ch_1_lo = 0.05603*count - 2.242, count<501.12
Ch_1_hi = 0.1645*count - 56.59, count>501.12
Ch_2_lo = 0.06734*count - 2.644, count<500.73
Ch_2_hi = 0.2005*count - 69.41, count>500.73
Ch_3_lo = 0.03269*count - 1.378, count<501.37
Ch_3_hi = 0.2292*count - 100.05, count>501.37
*************************************************
NOAA-16 AVHRR
Ch_1_lo = 0.05643*count - 2.176, count<498.96
Ch_1_hi = 0.1647*count - 55.97, count>498.96
Ch_2_lo = 0.06148*count - 2.322, count<500.16
Ch_2_hi = 0.1811*count - 62.16, count>500.16
Contact Person(s) Name/Email/Phone Number for Questions:
Emily Harrod Emily.Harrod@noaa.gov 301-817-3882 operations support
Xiangqian Wu Xiangqian.Wu@noaa.gov 301-763-8136 x 138 instrument scientist
Web site(s) that contain other relevant information (where applicable):
http://www.osdpd.noaa.gov/PSB/PPP/PPP.html - History of level 1B notices
http://www.ssd.noaa.gov/PS/SATS/messages.html - All user notices
http://www.oso.noaa.gov/poes/index.htm - SOCC polar satellite status